Siphon mechanism for heated rolls



Patented Oct. 1, 1946 f 1 UNITED STATES PATENT OFFICE/- SIPHGN MECHANISM FOR HEATEDBDLLS 'Hobart W. Bruker, Bordentown,

N. J., assgnorr to George W. Swift, Jr. Inc., Bordentown, N. J., a corporation of New Jersey Application April 14,

5 claims.

The invention relates to 'steam heated rolls of the type used in paper corrugating machinery, as drier rolls, and for similar purposes, wherein it is necessary to exhaust the condensate from the interior of the roll or drum. This is usually done by a Siphon pipe which is projected through the axial hole through the central hub at one end of the roll7 from which point it is necessary that the. Siphon pipe project ldown and be accurately positioned close to the interior wall at the bottom of the roll. The necessarily small size of the axial hole above referred to makes it difficult to provide a 'Siphon pipe which may be conveniently inserted through the hole and accurately positioned and maintained in proper place adjacent the interior surface of the roll near its bottom. This accurate positioning is important in operation, and also it is necessary that the Siphon construction be rugged and strong enough to overcome the tendency to break, or'Shift-out of accurate position as has been prevalent among prior mechanisms used for this purpoSe,`on account of the vibrations which occur in machinery of this character. 1 *Y The present invention aims primarily to provide a Siphon mechanism which will satisfy the above requirements of use, i. e. it may be readily inserted through the small central hole which is available, accurately adjusted and held in proper operating position, and sufficiently strong and rugged to stay in proper operating condition without frequent attention or repairs, under the operating conditions usually encountered.

Further objects and advantages of the inven-v tion will be in part obvious and in part Specii cally referred to in the description hereinafter contained which, taken in conjunction with the accompanying drawing, discloses a preferred Siphon mechanism constructed yto operate in accordance with the invention; the disclosure however should be considered as merely illustrative from the standpoint of the invention in its broader aspects. In the drawing- Fig. 1 is a central axial section through a heated roll equipped with a Siphon mechanism constructed to operate in accordance with the invention. Y

Fig. 2 is a detail 'Side View showing a portion of the Siphon mechanism in collapsed form, ready t be inserted into the interior of the heated roll.

Referring first to Fig. l, the invention is shown as applied to a steam heated roll I having .central hubs 2 and 3 at the ends thereof, the hub 2 being provided with an axial hole 3a through which the Siphon mechanism may be inserted. A rotary steam joint 4 is shown -at the left of Fig.` 1, and will not be described in'detail since appropriate forms thereof are known to the art. This joint may be understood as having a Steam admission pipe 5 through which steam for heat- 1945, Serial N0. 588,319

ing purposes is admitted to the interior ofthe roll or drum I, and an exhaust pipe 6 through.

which the condensate is withdrawn vby the Siphon mechanism hereinafter described.

The Siphon mechanism is provided with an elongated exhaust conduit member 1 whichv for purposes of rigidity and strength preferably extends through the roll I from one hub to the other, and is provided with supporting portions at both ends. As shown in Fig. 1 the left'hand end of the member 1 is secured to the'rotary steam joint 4 and the right hand end of member 1 projects into and iS supported by a threaded plug 8 in the hub 3 of the rol1,'the member 1 remaining Stationary while the roll rotates.

The exhaust conduit member 1 is provided with an interior exhaust passageway 9 which communicates at the left hand end of Fig. 1 withA the exhaust pipe 6 and at an intermediate portion of member 1 the exhaust passageway 9 communicates with a port I0 Which-is at one'side of the exhaust conduit member 1. A tubular Siphon member II, which valso may bea Stiff and rigid piece of metal is provided with an exhaust passageway I2 leading Siphon member is so connected to the intermediate portion of themember 1 that the Siphon member may move between one position as shown in Fig. 2, where it lies alongside and is substantially parallel to the exhaust conduit member 1, and another position wherein said Siphon member I I is directed outwardly away from the member 1 and has the inner end of its passageway I2 in communication with the port Il).

While the Siphon member is in the rst mentioned position, the exhaust conduit member 1 carrying Such Siphon member maybe inserted into the roll through the hole 3a above described. Then the Siphon member is tilted to the second position wherein its lower or outer end portion IIa will assume a position closely adjacent the interior Surface of roll I at the bottom of the roll, when the end portion 1a is engaged with plug 8 above described. The steam joint 4 will then be operatively connected in the usual manner and the Siphon mechanism is ready for operation. Y f f Preferably a releasable locking device is used to hold the Siphon member I I positively in proper position. As Shown more in detail in Fig. 2, this locking device may take the form of a latch bar I3 siidable along member 'I and held in place by screws i4 passing through the slot I5 in bar I3. In Fig. 2 the Siphon member II is Shown above member 1 in position alongside the latter and substantially parallel thereto. If desired the latch bar may be moved to the right from the 'positionv Shown in Fig. 2 to engage under the adjacent edge IIb of the Siphon member, to hold the latter positively in the position shown in from'end to end, and Said 3 Fig. 2. But if the latch bar i3 is free of ISiphon member l l, and the Siphon mechanism is turned upside down from the position shown in Fig. 2, the Siphon member il will tilt by gravity into the operating position shown in Fig. l. When this latter position has been assumed the latch bar i3 may be pushed forwardly to the position Shown in Fig. l wherein it positively hold-s thevr connected to the member 'l by means of a stud f |505 passing through the Siphon member and through side plates I6 which are attached to member l, the relation. of the parts being such that as Siphon member H swings into operative position its inner end Hb overlies the port I9 and thus applies the suction from passageway 9 to 'the condensate located in the bottom portion of roll l. The construction may be readily adapted to rolls of various diameters by substituting Siphon members of appropriate length, each of which is accurately finished So that its end portion Ha will be properly positioned for the particular diameter of roll which it is designed to serve.

The construction requires no flexible or structurally weak parts, and the member 1, being supported at both ends, better withstands the vibrations and holds the Siphon member I! accurately in position.

While the invention has been disclosed as embodied in the above described spec-inc form of Siphon mechanism, it should be understood that changes may be made therein without departing from the invention in its broader aspects, within the scope of the appended claims.

I claim:

1. Siphon mechanism for heated rolls comprising an elongated exhaust conduit member provided with supporting portions therefor at both its ends and also having an exhaust passageway therein leading out through one end portion thereof, said exhaust conduit member also having a port located at an intermediate portion thereof and affording communication between said passageway and a point exterior to said exhaust conduit member, a tubular Siphon member, and means movably connecting Said Siphon member to said exhaust conduit member, Said connecting means affording movement of said lSiphon member between one position wherein it lies alongside and substantially parallel to Said exhaust conduit member, and another position wherein said Siphon member is directed outwardly away from said exhaust conduit member but with its inner end portion communicating with the aforesaid port.

2. Siphon mechanism for heated rolls compr' ing an elongated exhaust conduit member provided with supporting portions therefor at both its ends and also having an exhaust passagewayv therein leading out through one end portion thereof, said exhaust conduit member also having a port located at an intermediate portion thereof and aiording communication between said passageway and a po-int at one side of Said exhaust conduit member, a tubular Siphon member, said Siphon member being pivotally attached to said exhaust conduit member, to swing between one position wherein it lies alongside and Substantially parallel to said exhaust conduit member, and another position wherein said Siphon member is directed outwardly away from Said exhaust conduit member but with its inner end portion communicating with the aforesaid port.

3. Siphon mechanism for heated rolls comprising an elongated exhaust conduit member provided with Supporting portions therefor at both its ends and also having an exhaust passageway therein leading out through one end portion thereof, said exhaust conduit member also having a port located at an intermediate portion thereof and affording communication between said passageway and a point at one side of said exhaust conduit member, a tubular Siphon member, and means movably connecting said Siphon member'to said exhaust conduit member, said connecting means affording movement of Said Siphon member between one position wherein it lies alongside and substantially parallel to said exhaut conduit member, and another position wherein said Siphon member is directed outwardly away from said exhaust conduit member but with its inner end portion communicating with the aforesaid port, said Siphon mechanism including a releasable locking member engageable with said Siphon member to hold the latter in its last mentioned position.

4. Siphon mechanism for heated rolls comprising an elongated exhaust conduit member having an exhaust passageway therein leading out through one end portion thereof, said exhaust conduit member also having a port aording communication between said passageway and a point at one side of said exhaust conduit member, a tubular Siphon member, means movably connecting said Siphon member to said exhaust conduit member, said connecting means affording movement of Said Siphon member between one position wherein it lies alongside and substantially parallel to said exhaust conduit member, and another position wherein said Siphon member is directed outwardly away from said exhaust conduit member but with its inner end portion communicating with the aforesaid port.

5. Siphon mechanism for heated rolls comprising an elongated exhaust conduit member having an exhaust passageway therein leading out through o-ne end portion thereof, said exhaust conduit member also having .a port affording communication between said passageway and a point at one side of said exhaust conduit member, a tubular Siphon member, means movably connecting said Siphon member to said exhaust conduit member, said connecting means aiording movement of said Siphon member between one position wherein it lies alongside and substantially parallel to said exhaust conduit member, and another position wherein said Siphon member is directed outwardly away from said exhaust conduit member but with its inner end portion communicating with the aforesaid port, and a releasable locking member engageable with said Siphon member to hold the latter in its last mentioned position.

HOBART W. BRUKER. 

